Our project, having as the guide the concept of "the open system", "a shrinkless 'biological' thinking regarding the world as the body" (M. Heidegger, Nietzsche, I , S. 566) of Purusa, the panentheistic God of the Rg- veda, proceeded in the course of demonstrating our surmise that the whole process of the historical development of Buddhist thinkings is no other than the process of this very Purusa,"the teleological reason of the history, revealing himself " (E. Husserl, Husserliana, IV, S. 386), and finally led us to a new understanding of the Buddhist view of the world which works as a basic theory for eco-ethical arguments overcoming eschatological nihilisms today.Our theory gives actual, concrete contents to the notion of "act = intuition" of Nishida-philosophy, the medium for newly realizing "the counter- correspondence" of a man and the panentheistic God ; as our theory goes, the intensity of an act of a man intending to turn his own difficulty, personal- historically and world-historically destined, through his vocational, everyday life, is identical with that of the existence of the world as the identity of sattvaloka (the world of living beings) and bhajanaloka (the world as the ecological environment) which is the body of Purusa whose nature is in Nietzsche's words "turn of difficulty" (Notwendigkeit).